Chiropractic table.



A. A. GRIFFIN. CHIROPRACTIC TABLE.

.APPLIOATION FILED JULY 2, 1912.

Patented Jan. 2-1, 1913.

7/ X3. Qm (2W Mw BY QQMQM A TTORIVEY.

UNITED STATES PATENT OFFICE.

ALBERT A. GRIFFIN, LANSING, MICHIGAN.

camaraderie TABLE.

To all whom it may concern: v

Be it known that I, ALBERT A, Gam rs,

a citizen of the United States, residing at Lansing, in the county ofI-ngham and State 'of Michigan, have invented a new and useiiulImprovement 1n Chiropractic Tables, 0t

which the following is a specification.

My invention consists of an improvement in the device disclosed inLetters Patent of the United States, No. 1029751, dated June 18, 1912and issued to me for an in'iproved chiropractic table, and its purposesare to improve the operation of the said table in use and to betteradapt it for the various purposes for which such a device is employed. Iattainthese purposes by the means shown in the accompanying. drawing.-;in which- Figure 1. is an elevation of my improved table taken from theside. Figs. 2, 3 and 4 are details illustrating various features of: theconstruction.

' The general construction and o )er ation of my table is suflicientlyset forth in the Letters Patent above referred to, and I will onlydescribe the novel features of my present application.

Referring to the drawings, 1 is the head; portion of my table and 2 thefoot, which in the present instance are shown support-v ed on legs 3,but may be supported in, any suitable manner, for instance, by box orpanel sides as shown in the Letters Patent above referred to. If thesupporting legs are used they are preferably braced at the bottom andthe head and foot portions keptat the proper distance from each other bylongitudinally extending strips 4. The shelf 5, attached to the headportions of the table,

is substantially the same as in the above mentioned patent, except thatI, at present, prefer to hinge it somewhat closer to the inner edge ofthe head port-ion, as, for example, at 6, as shown in Fig. 1.'llhetoggle 7 and its brace 8 are also substantially the same as in theabove patent, but the cross bar 10 is made narrower and the bar 8 simplypasses over the top'of it, el'igaging with the upper edge as shown in.Fig. 1. A chain or other flexible stop 11 extends from the cross bar 10to one member of the toggle 7, so as to prevent the toggle fromstraight.- ening too much when the shelf 5 is raised. A plurality ofsprings 12, shown in plan view in Fig, 4: has one end of each spring,attached to the toggle 7 and the other end Specification of LettersPatent. Application filed July 2, 1912. Serial No. 707,400.

Patented Jan. 21, 1 913.

to a lever 13, which has one extremity pivotally attached at 1 1tothe-framc of the table and the other end free to pass along a bar 15,prmided pith pins 10 adapted to engage the it 1.3, and thus permit anydesired dc of. tension to be placed upon the springs 11- will also benoticed that by reason of the peculiar construction of the lever 13, thesprings nearer the free end of the lever are more alter-led by itsmotion, also that by a sufficient motion of thelever 13, the springs '12,which are located, nearest to the movable ei'tdof the lever, might berelieved from all tension and instead lefthanging loosely so that whenthe lever was drawn from this position in the direction proper totighten the springs, the springs would successively be placed undertension after which time the tension would be increased gradually on allthe springs, but most rapidly on those nearest the movable end of thelever. The result of this is to 'give a much wider range of tension tothe springs than would be otherwise obtainable. By the use of thesesprings any desired amount of lifting force can be applied to the shelf5, whiclrwill thus furnishan elastic support of just the amount desiredto the body when the patient is placed upon the table and the brace 8released.

In my improved table the brace 8 is con trolled by levers 17. ()ne ofthese levers is preferably mounted at each side of the shelf 5 as shownin Fig.1. The levers themselves are shown more fully in Figs. 2 and 3.Cords 18 extend from the extremities of each of these levers overpulleys 19 to the brace 8, whichniay thus be raised bypressure upward onthe end 20 of either of the levers, the two levers workingilnlependently of. each other. Ordinarily but one of the levers will beused, the twobeing employed to make it. convenient to operate the shelf1 from either side of the table if desired The levers 17 are sustainedin the raised portion by catches 21, shown in detail in Fig. 2. Thesecatches are essentially simply bell crank levers, one extremity ofvwhich. is adapted to support the end 20 of the levers 17 and the otherto be moved by the fin er. It is evident that when either of the cute as21; is operated, it will release the end; :20 of the lewilf 17 and thebrace will be penn'litted to drop so as to engpge withthe cross bar10.3.1113- support the s elf 5 in its raised posi tion. 1

I tachedto it intermediate its extremities, one

I have found it desirable to support the foot slide 22, shown in myprevious construction as 15, by the use of a leg 23, pro- --vided with acaster 24, running on a track 25, which is parallel to the motion of theslide itself, thus serving to support the foot slide, without, in anyway interfering with its action.

I claim as my invention and desire to sec'ure by Letters Patent 1. Ina'table of the character described,

I the combination of a stationary head por- 2.'In a table of thecharacter described,

the combination of a stationary head ortion; a middle portion adapted tobe raised and lowered; means for-raising and lowering said middleportion; a plurality of springs acting upon said means in such a manneras to tend to raise said middle portion,'and means for successively.applying tension of said springs, said last mentioned means comprising alever having one extremity of each 'of said springs attached to itintermediate its extremities, one extremity of said leven'beingpivotally attached 'to the frame of said table and the other beingprovided with a handle, and means for locking said lever in any desiredposition.

3. In a table of the character described, the combination of astationary head 01'- tion; a middle portion adapted to be ra sed andlowered; a toggle for raising and lowering said middle portion; aplurality of springs acting upon said tog la in such a manner as to tendto raise said middle portion, and means for successively applyingtension to'said springs, said last mentioned means comprising a leverhaving one extremity of each of said springs attached'to it intermediateits extremities, one extremity of said lever being ivotally attached tothe frame of said tabha and the other being rovided with a handle, andmeans for lock ing said lever in any desired position.

'4. In a table of the character described,

the combination of a stationary head portion; a shelf hinged to saidhead" portion and to be raised and lowered; a toggle for raising andlowering said middle portion;

apluralit of springs acting'ulpon said toggle in suc a manner as to ten:to raise said middle portion, and means for successively applyingtension to said sprin said last mentioned means comprising a Idverhaving one extremity-of each of said springs at portion an extremity ofsaid lever being pivotally attached to the frame of said table andtheother bein rovided with a handle, and means for Ioclting said lever inany desired position.

5. In a device of the character described, the combination of a footportion supplied with a stationary top and having a movable slideadapted to form an extension to said top bridging the gap between saidmidv dle portion and said footportion, and a leg attached tosaid movableslide so as to travel therewith.

6. In a device of the character described,

the combination of a foot portion supplied with a stationary top andhaving a movable slide adapted to form an extension to said top bridginthe gap between said middle said foot ort-ion; a leg attached to saidmovable s ide so as to travel therewith, and a track upon which said legtravels.

7. In a device of the character described, the combination of a footportion supplied with a stationary top and having'a movable slideadapted ,to'form an extension to said top bridgin the gap between saidmiddle portion an said foot ortion; a leg attached to said movable ideso as to travel therewith; a wheel on the foot of said leg,

and a track on which said wheel travels.

8. In a device of the character described, a head portion provided witha stationary top; a middle portion adapted to be raised and lowered; atoggle supporting said middle port-ion; a releasableilock for saidtoggle, and a releasable lock for preventing said first mentioned lookfrom acting when said shelf is raised.

9. In a device of the character described, a head portion provided witha stationary top; a shelf hinged to said top; a toggle supporting saidshelf; a releasa 1e lock or said toggle, and releasable means forpreventing said lock from acting when said shelf is raised, said meanscomprising a lever operatively connected to said lock,

and a second lever adapted to engage with;

said first mentioned lever so as to retain said lock in an inoperativeposition.

10. In a table of the character described, the combination of astationaryhead ortion; a middle portion adapted to be raised andlowered; means for raising and low. er-

ing said middle portion; a plurality of springs acting upon said meansin such a manner as to tend to raise saidmiddle portion and means forsimultaneously varying the tension of said springs. ALBERT A. GRIFFIN.Witnesses:

' H. L. Lawanncn,

PEABLE Bontnrrr.

